Boiler cleaner



Sept. 13, 1932. c. HoWsE ET AL BOILER CLEANER Original Filed June 25,- 1923 5 Sheets-Sheet l Cyr-tis [.jawse ComeZc'z/s llaa/ell Sept. 13, 1 932. c. L. HowsE ET AL BOILER CLEANER 5 Sheets-Sheet 2 Original Filed June 25, 1925 Sept. 13, 1932. c. l.. HowsE ET AL BOILER CLEANER original FiledJune 25, 1923y 5 SleetS-Sheet 3 my w ee .W WSW m WZ J n W CC0 Sept. 13, 1932. c. L.. HoWsE ET AL BOILER CLEANER original Filed .June 25, 1925 5 Shees-Sheet 4 Kamm# BM Patented Sept. 13, 1932 VUNIT'ED STATES Pari-:Nr oil-*Pictet CURTIS L. HOVJSE AND'CORNELIUS D.V LOWELL, OF DETROIT, MICHIGAN, `ASSIIG-JITORS l TO DIAMOND POWERY SPECIALTY CORPORATION," F DETROIT, MICHIGAN, A1 CORf PonATioN er MICHIGAN 7 BOILER CLEANER l Application led- June V25, 192B, Serial No. 647,667. Renewed March 26, 1930.

This invention Vrelates to boiler cleaners u the hereinafter described control valve;

, 4Figure 2 is across sectional view of the same on line 2-2 of Figure 1; f A

Figure 8 is asect-ional view similar toFigure` 2 but showing the open position of the I valve;

v. Figure 4 is a cross sectional view similar to Figure 3 and showing the open position .of the valveLthe ported member of the valve having therposition which it assumes prelim- {in ary to closing of the valve; Y

, Figure 5 is an aXialsectionalview of 'an alternative form of the automatic control valve; j L f Figure 6 is a plan View of thesanie, omit- -Ytingthe'valve casing; 5 vrFigure Tjis a cross sectional view on line f of Figure 5;. i

yFigure 8 is an axialsectional view of still another alternative valve mechanism;

Figure 9 is atransverse longitudinal section of the same online 9 9 of Figure 8; l .Figure 10 is across sectional view of the sametaken on line 10-10 of Figure-8; Figure 11 isA an axial sectional View of a further modication of the control valve mechanism; e

Figure 12 is a plan view of the sliding and rotative sleeve controlling the steam supply 1inthe construction Vshown in Figure 11;

l.Figures 13 and14 are cross sectional views talre'nt on linek 13, v14-13, 14 of Figure 11 showing'the valve opened yand closed.

:Referringghrstto the construction illus# ftrated in Figures 1 to'4 inclusive, 1 designates rotary blower. pipe or unit having the usual Vseries of discharge nozzles 1a for steam or ing 2l at oneV end thereof.AV l/Yithin'saidcasing the blower pipe 1 is rigidly connectedto va I cylindrical head 3f having the'linlet portBa, said head preferably having a screwthreaded connection with the pipe 1, as indicated at '3b.-`V The head?, has a reduced endportion 4 i Yother drive member) is mounted fast upon the reduced projecting end yportion 4 ofthe head 3. For rigidlyconnecting said chain wheel to the part 4, bolts 6-l or the like maybe employed. '7 is a sleeve which snugly `embraces tlie cylindrical head 3 within the casing 2, said'sleevevfbeing formed withafport 8.

AlVhen said port registers with they port Stof the head steam or the like may flowffrom the casing 2 into the head 3 and thence to the blower pipe. lll/lien said sleeveis rotated to shift the port'S out ofv registration with. the

`port 3a the cleaning fluid is'cutoiffromthe blower pipe (see Figure'2). The sleeve f7 cairiesan outwardly progecting lug 9 which is engageable with a pin 10 'carriedfby'V the f,

casing 2 to limit rotation of saidsleeve' in either direction. Thus, if the-ports 8 and 3a Vinitially occupy the non-registeringrelation shown in Figure 2 and tliefchain wheelxiis driven to thevright, the sleeve'T-will, during ,Y

the majorV .portion of the rev`.olutio n,xturn' 'in unison with the head 3, this following from the' fact that said sleevevsnugly fits upon said head andiisunder an external steam pressure .tending tofs'oinewhat increase` the'firinness; of Contact wit-li thehead8 Wliensaid. head has Y been actuated throughl almost a revolution the lug 9 will enga-ge an oppositeside of the stop Vpin 10, asis illustrated in Figurelw. This willcoinpel the sleeve 7 to remain 'stationary and a slight further actuation ofthe head to the right will register the ports '32 and18 as is, illustrated in Figure 3, A's'crew 10a carried by the, hea'cli and outwardly projecting v*intothe'port acts as a, stop to limit rotative:

travel of said head when the ports 3a and 8 are properly registered. Preferably the right hand edge of the port 8 is notched slightly as tion of the head 3 to the left shifts the port 3a out of registration with the port 8 whereupon the screw 10 engages the edge 12 of theport 8 and thus stops further rotation to the left. The described cycle of the operation 'may be repeated as often as is necessary. 12a designates an-inlet for steam or other cleansing-fluid to the casing 2. 12b is a fin Figure 7v of the drawing. This hole is adapted to receive a.k pin similar to the pins ,22 and 23 topermit an adjustment inthe time whistle ymounted in the closed end 4a of the head 3, which whistle sounds as long as steam is entering the blower pipe 1 and thus acts as `a safeguard to prevent the valve being left in open position.

, l Referring now to that form of the invention disclosed in Figures 5, 6 and 7, 13 is a rotary blower pipe and 14 is a casing having its ends provided with opposed packed bearings 14a in one of which said pipe is j ournaled. lVithin said casing the pipe 13 is screw threadedor otherwise rigidly connected to one end vof a cylindrical head 15 having the port 15a, the other end of said head being screw thread- 4edto a short length of pipe 16 journaled in the other bearing 14 and projecting exterior- 'ly'of the casing to carry a chain wheel 18, the

projecting'end of said pipe 16 being closed, as indicated at 18a. Within the casing 14 the head15'is snugly embraced by a sleeve 19 in which is formed a Yport 20 which, when registered with the port 15 of said head, pro- -vides for' admission of steam or the like to the blower pipe 13 from the casing 14.. Said sleeve 19 carries an outwardly projecting pin ,21jwhich' in two different positions of longitudinal adjustment of said sleeve is adapted The head 15 carries upon its respective ends '55 pins 24 and 25 which are respectively en- "ga'geable with the teeth 24 and 25to shift the sleeve, 19 endwise. 26 is an inlet for steam orV the like to the casing 14. l

If desired, an additional threaded hole 23 may be formed in thec'asing 14 as illustrated offoperation of the valve with respect to the movement of the blower unit. A suitable plug 23" niay be provided to close the plug when the same is not in use.

Considering now the operation ofthe describedconstruction, it is to be understood that, by means of the chain wheel 18, the head 15 and blower pipe 13 vare rotatively actuated in a constant direction instead of being rocked back and forth as in the first described construction. Assuming that the ports 15a and 20 are initially registered, as illustrated in Figure 7 and that the blowerris beingactuated to move in a clockwise direction, initially the pin 21 will encounter the pin 22 as indicated in Figure 5, the sleeve 19 being thus held stationary. ContinuedY rotation of the head'l will, after 'zt-predetermined rotative advance, cause the pin 24 to engage the bevelled edge ofthe tooth 24 forcing the sleeve 19 to the right so that the pin 21 clearsthe p'in 22. The rotative advanceof the head 15 during the interval of rest of thesleeve 19 will 4shift the port 15l of -said head out of registration with that of the sleeve so that the supply of cleaning-Huid to the blower pipe will be cut olf. After a predetermined further rotation of the head 15, the pin 21 will encounter Vthe stop pin 23 again halting rotation of the sleevel). During this period of rest of said sleeve, the advance of the head 15 will again shift the port. 15u into registering relation with the port 20. 1When such relationV has been established, the pin 25 will engage the bevelled edge of the tooth 25 shifting the sleeve 19 to the left so that the pin 21 clears the stoppin 23 and the sleeve is again Vcarried forward by the rotating head. The described cycle of operation may be repeated as long vas is necessary. Y f l n In that formof the invention illustrated in Figures 8, 9 and 10 there is shown a rot-ative blower pipe 27 and a chain Awheel 28 driving said blower pipe througha cylindrical head 29, said head having inlet ports .30,the valve casing'31 enclosing saidhead and a sleeve 32 snugly embracing said head within said casing, all of said parts being arranged. substantially as hereinbefore 'described. The distinctive feature of this construction, however, lies in the fact thatan endwise 'movement of the sleeve 32 is employedtocontrol the ports 30.: Thus, said ports .are circumferentially elongated and 'are adapted to register with similarly elongated ports 33 in the sleeve 32. Upon the end walls of the casing 31 there are mounted reverse cam members 34 and 35 which are engaged by lugs V36 integrally projecting from the ends of the said sleeve. ToV insure rotation of the sleeve 32 in unison with the head 29 it is preferred to provide an inwardly projecting pin 37 upon said `sleeve to engage 1n a longitudinal groove 38v exteriorly formed in the head 29.

In the operation of the described construction-the sleeve 32 turns in unison'with the blower pipe 27 when the latter is rotatively actuatedA Abut during each revolution said Vsleeve is subjected, through 'engagement of the lugs36 by thecams 34 and 35to` an endwise sliding movement which causes the ports and 33 to register during a predetermined portion of such revolution so that at suchtimes steam or the like is admitted to the blower pipe 27 fromthe casing 3l. During the remaining portion of each revolution said ports are non-registering and the supply of cleaning fluid to, the unit is cut olf.

Considering now the alternative construction illustrated in Figures 11, 12, 13 and 14,

`40 is a rotary blower pipe equipped with a chain wheel 41, the latter being connected to said pipe by a cylindrical head 42 having the intake ports 43 for steam or the like.

The ported portion of saidheadis enclosed Y within avalve casing 44 and within said casing a sleeve 45 snugly embraces said head, said sleeve being formed with portslr 46 adapted, in one position of endwise move-` ment of said sleeve, to register with the ports 43. In this construction the sleeve 45 isrestrained from rotation by engagementlof a pin 47 outwardly projecting from said sleeve etween a .pair of lugs 48 internally formed upon the casing 44. Thus, said sleeve 45 is free to slide lengthwise upon the head 42 but cannot turn with said head. -As a provisio-n for shifting said sleeve lengthwise to establish or discontinue the registering relaare formed oppositely upon the respective ends of said sleeve, each having one edge parallel with the axis of said sleeve, the.

other edges of said teeth'being 'correspondingly bevelled, as isbest seenin Figure 12. Upon the head 42 there is provided a-V pair of pins for respective engagement with the bevelled edges of the teeth 49.

In the opera-tion of this embodiment of the invention, the ports 46 and 43 registerduring a predetermined portion of each.revo lution of theV head 42, the circumferential extent of the ports 46 sufliciently exceeding that of the ports 43 to maintain a registered Y relation during this period. One of the pins 5()y will then encounter the 'corresponding cam tooth 49 and shift the sleeve endwise to cut offz registration between the sleeve ports and those of the head.V After turningl to the proper predetermined portion of la revolution with the' fluid supply thus cut ofi' from the blower, the other pin 50 encounters the other lug 49 and thev sleeve is Vshifted endl wise to register the ports 46 and 43.

It is a feature of eachof the described valve constructions that the rotative actuation of the blower is utilized also to control opening and closing of the valvefso as to maintain the steam supply only during a' desired predetermined portionfof each 'revotion between the parts 46 and 43 teeth 49 duringpredetermined portions of the angulution or of each angular advance in case 4the unit is of a rocking type.

The word rotative as applied herein and in the followingclaims is considered to sig- Y nify adapted to turn through either a revolution, a fraction of a revolution, or a plurality of revolutions. Y Further, while the in- -vention has been described as comprising a boiler cleaner adapted for cleaning partsof a boiler, it will be apparent that the invention may belernbodied in a cleaning-*device for similar types of apparatus.V lIt is to `be therefore understood that the word boiler wherever used in thespecification or claims 1s to be construed as meaning a heat transfer apparatus or fluid heater of any character, while the termy boiler cleaner is to and lineans for shifting said sleeve during a predetermined angular advance of'saidf unit `to register said ports for a desired proportion of said advance. Y

2. In a boiler cleaner, the combination with a casing, of a rotative cleaning unit having a portion within the said casing, said unit having a. circumferential inlet port,.a ported sleeve snugly embracingthe ported portion of said unit and frictionally constrained to travel therewith,- said sleeve being adapted tol normally'close the port in said unit during the periods `of non-use of the boiler cleaner, andmeans forv shifting said sleeve through the angularadvance of the unit to register' the-.two said ports during a'predetermined kportion of said advance. v

3. In a boiler cleaner, the combination with a delivery head for a cleaning fluid, of'a rotative cleaner unit having an inlet port within saidhead, a ported sleeve surrounding lthe -ported portion of said unit within sai delivery head, and means for rotating said unit, said sleeve being movable by saidl unit lar advance of the unit to control registration of the ports of the unit and sleeve.

y 4. *In aboiler cleaner, the combi-nation with a deli-very head for a cleaning l.u.id,.of2V a rotative cleaner unit having :an inlet port c withinV said `head,a ported sleeve surroundingv the ported portion of said unitwithin said head and adapted to ,-normally closejthel port in said unit duringfthe'periodsof non-use of the? boiler cleaner,'meansfor rotating saidw unit, the-sleeve being frictionally constrainecf'r` cleaner for any Y nto. rotate .with :the unit, and ymeans carried by said head acting upon the sleeve during a prede'termine'd portion of the angular advance oftheunit to shiftthesleeve to establish registration or" the portthereof With that of the unit. Y

s-.In a boiler cleaner, the'combination with aldelivery head foracleaning fluid, ofa rotative cleanerhaving an` inlet port Within *'-said head, means for rotating'said unit, and

ment -apo'rted control element for the port of said l.unit adapted toy normally close the port in said unit ,during theperiods ofnon-.use of -the boiler cleaner,frictionally.constrained to rotateivith the unit, and means carried by of the ports of the unit andsaidcontrol ele- 6. In a boiler-cleaner, the combination With la.`delivery head Jfor a cleaning fluid, of a rotative cleaner unit having an inlet port vWithin said head, aported sleeve surrounding the ported portion of the unit Within y -said head and adapted to normally close the port in4 said unit during periods of non-use of the boiler cleaner, means for rotating said unit, and coacting means upon the said unit and saidhead controlling said sleeve and :registering the port thereof'vvith thatlof the Yunit .during a predetermined portion or'` the angular advance. f i 7. In aboiler cleaner, thecombination of a rotative cleaning unit having a plurality of jets for discharging steam or the like against the surfaces to be cleaned, said unit having alateral inlet port, and a movable member adapted tonormally close the port in said unitduring-tlie periods of non-use `of the boiler cleanerand having a port adapted to vregister With the 'port in said unit.

v8. In a boiler cleaner, the combination of a .rotative cleaningunit having aV plurality of jets ffor discharging steam orithe like against the surfaces to be cleaned, said unit having f aninlet port, and a movable member engaging said unit and adapted to normally close At-he port in saidunit during. the periods of lnon-use of the boiler cleaner, and having a vport adapted to register with the port in 'said unit, saidmember rotatingv With said I with a cleaning fluid supply pipe, of a movunit after said ports are in registration.

9.` In a boiler cleaner, the combination with a delivery head for a cleaning fluid, of a rotative cleaner unit provided with a discharge nozzleand having an inlet port Within said Iiead, a ported element, means of moving said ported element to register with said inlet port, after a predetermined movementl ofV the cleaner unit, for supplying cleaning moving said ported elementoutjof registry, '/With said inlet port after a further predeter- `rmined movement of the cleaner unit.

-iiuid to said discharge nozzle, and means for register With said inlet port at times for sup- 'plying cleaning yfluid to said discharge nozzle,-means controlled by the rotative movement of the cleaner unit for moving said ported element out of registry With said inlet port aftera predetermined movementof the cleaner unit.

11. In a boiler cleaner, the combination with a delivery head for a cleaning iluid, of al rotative cleaner unit' provided with -a vdischarge nozzle andV having an inlet port Within said head,.a ported element adapted to register With said inlet port at times for supplying cleaning iiuid to said disch-arge nozzle, means controlled bythe rotative movement ofthe cleaner unit for moving said ported element out of registry With said inlet port after a predetermined movement of the cleaner unit, and means controlled by the rotative movement of the cleaner unit for moving said ported. element back into reg- A.istryWith said inlet port after a further predetermined movement of the cleaner'unit.

l2. -In a boiler cleaner, thevcomb-ination Witha delivery head for a cleaning fluid, of

a rotative cleanerunit having an inlet port Within said head, a ported member overlying the ported portion of the unit Within said head and adapted to normally close the port in said unit during the periods of non-use of the boilercleaner, means for rotating said J unit and coacting meansupon the said unit `and saidhead controlling said ported member and registering the port thereof With thatof the unit after a predetermined portion ofthe-l angular advanceA of saidunit; y

13. In a boiler cleaner, the combination with a cleaning fluidsupply pipe, of arotative cleaning unit having an inlet port for the admission'ofecleaning fluid to' said unit, av

ported member adapted to register With the inlet portofsaid unit, and means for rota-ting saidunit, said member being movable by said unit during predetermined portions of the movement of said unit to control registra-`y tion of the ports of the unit and member.

14. In a boiler cleaner, the combination able cleaningk unit having an inlet port for the admission of cleaning fluid to said unit, a ported sleeve snuglyembracing the cleaning unit 'and adapted `to normally close the `port in said unit, means for moving said unit,

tive cleaning unit having an inlet portfor the admission of cleaning4 fluid to -said unit, a ported member adapted to .normally-close the port in said unit, means for rotating said unit and means automatically operable upon a predetermined rotation of said unit for shifting -thegsaid ported member to effect a registration of the port thereofwith the yinlet port of the said uniti j Y V16. The combination with a blowerelement and means for actuatingthe same, of a sliding valve for controlling the admission of cleaning fluid to said blower element, and cam members for automatically controlling the movement of said valve to open andclosed positions upon the actuation of saidblower element.' e Y y 17. The combination witha rotatable blows er element and means for rotating the same throughout an arc of at least 3600, of a valve for rcontrolling the admission of cleaning fluid to said blower element, and means including a relatively stationary cam Vmember for moving said valve to open and closed positions 'upon the rotation of said blower element. y 18. In aboiler cleaner, the combination with a delivery head for a cleaning fluid, of a rotative cleaner unit having an inlet'port within said head, a valve within said head for controlling the fiow of cleaning fluid through said port and cam members within said head for automatically controlling the movement of saidvalve to open and closed positions upon the actuation of said blower element. l Y

19. The combination witha rotatable-blower element and means for rotating the same,

of a sliding sleeve valve for controlling the admission of cleaning fluid to said blower element and lmeans including relatively stationary cam members for moving said valve to open and closed positions upon the rotation of said blower element. l y

20; The combination with a movableblower element having an inlet port, of a sleeve valve controlling the flow of cleaning fluid through said port, and means operable upon movement of said blower `element to move said sleeve valve to control the admission ofc1eaning fluid to the blow-er element in dependence upon the movement thereof.

21. Thecombination with a movable blower element, of a sleeve valve movable with said `blower element and relative thereto for controlling the flow of cleaning fluid to the blower element, and means operable upon movement of the blower element to move the said sleeve valve relative to the blower element.

v22. The combination with a movablev blower to'move said yported member to control the registration ofthe port therein with -thfepo'rt in said blower element.` y

28. The combinationwithamovable blower element, of a ported membervmovable with saidbloweryelement andrelative thereto for controlling the admission ofcl eaning fluid to with the said blower element andalso movf y able longitudinally thereof to controlth'e admission of cleaning fluid to the blower ele, ment, and means operable` upon rotationof the blower element to.y effect a llongitudinal movement of the valve member.y Y

element, of a Vva lvememl )e'ry movable 4with said blower element and valso movable relaitive thereto for controlling; the admission of cleaning fluid to the blo-werfelement, and means including a vpair of cam members for effecting a movement of the valvel member relative to the blower element. A

, 27. The combination with amovable blower element, of -arpmembei' embracing: the VAsaid blower Velement and .movable with the same,

said member being also movable relative to the blower element forcontrolling the Yflow of cleaning. fluid to Ithe yblower element, and means operableupon movement ofthe blower element tofeiect a movement ofthe saidmember relative'to theblower element. l .ff

28.@The combination with a movablejblo'wer element having an inlet port, of a sleeve valve for controlling the flow of cleaning fluid through, said port, meansfon said blower-element operating upon relative movement between the valve and blower element to shift said sleeve valvejlongitudinally of said-blower element to control the flow'ofcleanin'gfluid to the blower element, and meansl for fre'.- straining said sleeve valve 'against movement with said blower element.A

' 29. The combination witha movable blower element having a laterally opening inlet `port,

26. The combination with a movableblower los of a sleeve valve embracing said blowerelement forcontrolling said port, means operable .upon movement.- of said blower element for shifting said sleeve valve longitudinally of said blower element,-'a'nd means forrevstraining said sleeve-valve :againstxm'ovementlwith said blower-element. I

j 8,0. Thecombinationy with f a-z Irotatable .blower'element having anlinletport,` of a ported-member for controlling'said port,

. meansA operable upon 'movement of said blower element for shifting said ported mem- I ber longitudinally of theblower element, and

means for restraining said portedv member against movement l with said blower element.

31; The combination with a rotatable blower element, of a sleeve valve for conlingthel flow of cleaning fluid through said inlet port, means on said blower element operating upon relative movement between said member and blower element to shift said member longitudinally of said blower ele- A ment to control the flowof cleaning fluid to the blower element, and means for restraining said member against movement with said blower element. Y

33. The combination with a rotatable blower element having an inlet port, of a member carried byv said blower element for controlling the flowofcleaning fluid through said port, means operable upon rotation of said blower element to shift said member longitudinally of said blower element, and means for restraining said member against rotation with said blower element. j Y 34. The combination with a. movable blower element having an inlet port, of a member carried by said blower element and normally movable therewith for controlling said port, and meansffor holding said member against movement with said blower ele-ment to effect a closing or opening of said port.

35. The combination with a movable blower element having an inlet port, of a ported member carried by said blower element and normally movable therewith, and means for periodically holding said ported member against movement with said blower element to control the registration of the port in said ported memberwith the inlet port in said blower element. v

y 36; The `combination with a rotatable blower element having an inlet port, Vof a sleeve valve normally rotatable with said blowerelement, and means periodically operable to restrain said sleeve valve against rotation with said blower element to control openin and closing ofv said port by said sleeve va ve..4

.37. The combination with a rotatable -blower element having an inletport, of a ported sleevesurrounding the ported portion of said blowerelement and normally rotatable therew1th, means for rotating said blower element, and means Vperiodically-'operable to hold said ported sleeve againstv rotation with said blower element to control registration of the port in said sleeve with the inlet port in said blower element.

38. In a boiler cleaner, the combination of a movable blower element, means for oonrelative to said valve seat member for conl trolling the flow ofA cleaning fluid through the same, and means for moving said blower element, said valve seat member being mov# able with said blower element and relative to said valve memberl upon movement of the blower element to provide for-the admission ofcleaning fluid tothe blowerV element.

' 39. In a boiler cleaner, thecombination of a rotatable blower element, a valve seat member rotatable with the blower element,"a valve member engageable with said valve seat member and mounted for limited'movement with respect thereto, and means for rotating said blower element, said valve seat member being movable relative to said valve member upon rotation of the blower element to admit cleaning fluid to the blower element.

40, In a boiler cleaner, the combination of ablower he-ad, a blower element rotatably journaled in said head, means forcontrolling the Iflow of cleaning fluid to said blower element including a valve seat member movable with the blower element and a valve member 'engageable with said valve seat member,

means mounting saidvalve member in said head for limited movement therein, and means forrotating said blower element, the rotation of said blower element. effecting a movement of said valve seat member relative to said valve member to admit cleaning fluid to the blower element.

41. In a boiler cleaner the combination of a rotatable blowerelement, a valve seat rotatable with the blower element, a cylindrically surfaced valve free to float with the'valveY seat for controlling the flow of cleaning fluid to the blower element, means for restraining said valveV against rotation with the blower element, and means for rotatingthe blower element, said valve seat being rotatable with the blower element upon rotation of the latter to admit cleaning fluid to the blower element. 42. In a boiler cleaner the combination of a blower head, a rotatable blower element extending into said head, a valve seat rotatable with the blower element, a cylindrically surfaced valve free to float with the seat for controlling the flow of cleaning fluid from the blower'head to the blower element, said valve being spaced from the inner surface of the head Vwhereby the pressure of the cleaning fluid in the head tends to hold the valve to its seat, means for restraining said valve against jes rotation with the blower element, and means for rotating the blower element, said valve seat being rotatable with the blower element upon rotation of the latter to admit cleaning fluid to the blower element. f

43. In a boiler cleaner, the combination of a rotatable blower element, a valve seat rotatable with the blower element, a cylindrically surfaced valve free to float with the valve seat lo but fixed against movement longitudinally of the element for controllingthe flow of cleaner fluid to the blower element, means for restraining` said valve against rotation with the blower element, and means for rotat- O ing the blower element, said valve seat being rotatable with the blower element upon rotation of the latter to admit cleaning fluid to the blower element.

44. In a boiler cleaner the combination of a 20 blower head, a rotatable blower element eX- tending into said head, a valve seat rotatable with the blower element, a cylindrically surfaced valve free to float with the seat but fixed against movement longitudinally of the 25 element for controlling the flow of cleaning fluid from the blower head to the blower element, said valve being spaced from the inner surface of the head whereby the pressure of the cleaning fluid in the head tends to hold 30 the valve to its seat, means for restraining said valve against rotation with the blower element, and means for rotating the blower element, said valve seat being rotatable with the blower element upon rotation ofthe latter to admit cleaning fluid to the blower element.

45. In combination, a movable blow-er element, a valve for controlling the flow of cleaning fluid to said blower element, a member movable with said blower element and so i9 associated with said valve that upon a predetermined movement of said blower element in one direction the member moves said valve to open position, and asecond member movable with said blower element and 'so associated with said valve that upon a further predetermined movement of the blower element in thesame direction this second member closes said valve. 46. In a boiler cleaner, the combination 953 with a movable blower element, of a valve for controlling the admission of cleaning iuid to said blower element, and a plurality of members movable with said blower element and so associated with said valve that upon continuousmovement of said blower element in the same direction they operate to successively open and close said valve.

In testimony whereof we aflix our signatures. 00 CURTIS L. HOWSE.

CORNELIUS D. LOWELL. 

